rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10382 ticks this GP) idle=354c/1/0x4000000000000000 softirq=85715/85716 fqs=3300
rcu: hardirqs softirqs csw/system
rcu: number: 1357826 68 0
rcu: cputime: 15114 37366 34 ==> 52490(ms)
rcu: (t=10500 jiffies g=127129 q=3208 ncpus=2)
CPU: 1 PID: 16179 Comm: syz.2.3287 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:stack_trace_consume_entry+0x5/0x270 kernel/stacktrace.c:83
Code: 00 00 00 48 3b 4c 24 78 75 09 48 8d 65 f0 5b 41 5e 5d c3 e8 6d 4b 0e 09 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 18 48 ba 00 00 00 00 00 fc ff
RSP: 0018:ffffc900001f0458 EFLAGS: 00000286
RAX: ffffffff81328f9a RBX: ffffc900001f0520 RCX: ffff888028291e00
RDX: 0000000000000100 RSI: ffffffff8a02255f RDI: ffffc900001f0520
RBP: ffffc900001f04f0 R08: ffff888028291e00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffffff8a02255f
R13: 00000000000002c0 R14: ffffffff81758be0 R15: ffffc900001f0468
FS: 00007f417681d6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000024fab000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
arch_stack_walk+0x138/0x190 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6a/0x4d0 mm/slab.h:767
slab_alloc_node mm/slub.c:3495 [inline]
kmem_cache_alloc_node+0x1af/0x310 mm/slub.c:3540
kmalloc_reserve+0x95/0x240 net/core/skbuff.c:562
__alloc_skb+0x138/0x2c0 net/core/skbuff.c:653
__netdev_alloc_skb+0x10c/0x500 net/core/skbuff.c:717
netdev_alloc_skb include/linux/skbuff.h:3304 [inline]
dev_alloc_skb include/linux/skbuff.h:3317 [inline]
__ieee80211_beacon_get+0xd5d/0x1520 net/mac80211/tx.c:5449
ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5571
ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
mac80211_hwsim_beacon_tx+0x3bd/0x770 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
__iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:766
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802
mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295
__run_hrtimer kernel/time/hrtimer.c:1754 [inline]
__hrtimer_run_queues+0x525/0xc10 kernel/time/hrtimer.c:1818
hrtimer_run_softirq+0x177/0x290 kernel/time/hrtimer.c:1835
handle_softirqs+0x27d/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__schedule+0x11a/0x4660 kernel/sched/core.c:6589
Code: 8d bd a0 cc 03 00 4c 89 f9 48 c1 e9 03 48 b8 00 00 00 00 00 fc ff df 48 89 4c 24 58 80 3c 01 00 74 08 4c 89 ff e8 96 84 53 f7 <49> 8b 07 48 89 44 24 28 4c 8d 70 20 4c 89 f0 48 c1 e8 03 48 b9 00
RSP: 0018:ffffc900102978e0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffffff8ca7aa38 RCX: 1ffff110171e7994
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90010297a80
RBP: ffffc90010297af0 R08: ffffc90010297a7f R09: 0000000000000000
R10: ffffc90010297a70 R11: fffff52002052f50 R12: 0000000000000001
R13: ffff8880b8f00000 R14: dffffc0000000000 R15: ffff8880b8f3cca0
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3a/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
futex_wake+0x41d/0x4f0 kernel/futex/waitwake.c:183
do_futex+0x35d/0x3e0 kernel/futex/syscalls.c:139
__do_sys_futex kernel/futex/syscalls.c:211 [inline]
__se_sys_futex+0x3a9/0x440 kernel/futex/syscalls.c:192
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f417599ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f417681d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f4175c15fa8 RCX: 00007f417599ce59
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f4175c15fac
RBP: 00007f4175c15fa0 R08: 0000000000745a69 R09: 0000000000000000
R10: 000000000000000a R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4175c16038 R14: 00007ffcb6493fc0 R15: 00007ffcb64940a8